30th Meijin

The 30th Meijin was the 30th Meijin tournament of the board game go. The tournament was held in 2005 in Japan and was won by Cho U.

Challenger Group

Players	1	2	3	4	5	6	7	8	9	T
Yoda Norimoto	X	Loss	Loss	Loss	Won	Loss	Won	Won	Loss	3
Kobayashi Satoru - C	Won	X	Won	Won	Won	Loss	Won	Won	Won	7
Imamura Toshiya	Won	Loss	X	Loss	Won	Won	Won	Loss	Won	5
Yamashita Keigo - C	Won	Loss	Won	X	Won	Won	Won	Won	Won	7
O Meien	Loss	Loss	Loss	Loss	X	Won	Won	Won	Loss	3
Yamada Kimio	Won	Won	Loss	Loss	Loss	X	Won	Won	Loss	4
Cho Sonjin	Loss	Loss	Loss	Loss	Loss	Loss	X	Loss	Won	1
Ogata Masaki	Loss	Loss	Won	Loss	Loss	Loss	Won	X	Loss	2
Sakai Hideyuki	Won	Loss	Loss	Loss	Won	Won	Loss	Won	X	4

Players	Final
Yamashita Keigo	Kobayashi Satoru
Kobayashi Satoru	Kobayashi Satoru

Players	1	2	3	4	5	6	7	T
Cho U (Meijin)	Won	Won	Won	Loss	Loss	Loss	Won	4
Kobayashi Satoru	Loss	Loss	Loss	Won	Won	Won	Loss	3

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Meijin
Past editions	1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
Past winners	Hideo Otake (1976) Rin Kaiho (1977) Hideo Otake (1978–1979) Cho Chikun (1980–1984) Koichi Kobayashi (1985) Masao Kato (1986–1987) Koichi Kobayashi (1988–1994) Masaki Takemiya (1995) Cho Chikun (1996–1999) Norimoto Yoda (2000–2003) Cho U (2004–2005) Shinji Takao (2006) Cho U (2007–2008) Yuta Iyama (2009–2010) Yamashita Keigo (2011–2012) Yuta Iyama (2013–2015) Takao Shinji (2016) Yuta Iyama (2017) Cho U (2018) Shibano Toramaru (2019) Yuta Iyama (2020–2021)
Honorary winners	Cho Chikun Koichi Kobayashi